Hey Goatie, build's looking great!I spent a few hours tinkering yesterday.
Noctua 25mm and the 17mm rad fits under my motherboard (just). The side rad has 15mm noctua so team coffee and cream all round.
I'm planning a hard-line build and currently tossing up between TX240 I have on hand, the HJ rad, Noctua Slims and 12mm slim scythes. I'm intending on implementing a second rad like some of the brave people on this forum. Is your HJ rad as close to the side panel as possible - if not is this because of how the fittings lined up? What's the clearance between the fans and your barrow GPU block atm?
Also is your HJ rad resting on the cross beam? Is it attached any other way?
Also I'm wondering how the g 1/4 placement on the HJ rad compares to a TX240/GTS240/EK Slim/Alphacool st25 if you have used any of those?